=+b variable or fixed (V or F) costs with respect to how the total costs of the plant change as the total number of vehicles of each type assembled changes. (If in doubt, select on the basis of whether the total costs will change substantially if there is a large change in the total number of vehicles of each type assembled.)

You will have two answers (D or I; V or F) for each of the following items:

Cost item D or I V or F